Search Results for author: Jan Draisma

Found 2 papers, 1 papers with code

3D genome reconstruction from partially phased Hi-C data

1 code implementation27 Jan 2023 Diego Cifuentes, Jan Draisma, Oskar Henriksson, Annachiara Korchmaros, Kaie Kubjas

The 3-dimensional (3D) structure of the genome is of significant importance for many cellular processes.

3D Reconstruction

Components of symmetric wide-matrix varieties

no code implementations9 Mar 2021 Jan Draisma, Rob H. Eggermont, Azhar Farooq

We show that if X_n is a variety of cxn-matrices that is stable under the group Sym([n]) of column permutations and if forgetting the last column maps X_n into X_{n-1}, then the number of Sym([n])-orbits on irreducible components of X_n is a quasipolynomial in n for all sufficiently large n. To this end, we introduce the category of affine FI^op-schemes of width one, review existing literature on such schemes, and establish several new structural results about them.

Commutative Algebra Algebraic Geometry Combinatorics 13E05, 05E40

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